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in the past in the past few years in the last 30 years 各用什么时态?

分类: 作业答案 • 2021-12-01 17:13:44

问题描述：

答

in the past用一般过去时
in the past few years 和 in the last 30 years 用现在完成时

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in the past in the past few years in the last 30 years 各用什么时态?

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